Internal-combustion-engine manifold



Sept. 6, 1927.

c. BREER INTERNAL coMBU's'rIoN ENGINE MANIFOLD Filed Deo. '7. 1925 IIIII attenua! Patented Sept. 6, 1927.

f entre ser CARL Bienne, or DETROIT, MICHIGAN.`

INTERNAL-oonnusrionfnnernn MANIFOLD.

Application filed December It is `the primary object of myv invention to provide a simple and economical construe-I tion for controlling the heating of sections of an intake manifold by means of the 5 exhaust gases inthe exhaust manifold.

lilith the above and other objects in View,

my invention consists in thel arrangement,

combination and construction of the various parts of my improved device asdescrib'ed Ain which: 1

Fig. 1 is a side elevation of my improved device with certain parts thereof cut away. Fig. 2 is a sectional view taken on line 2 2 of Fi 1.

3 is a sectional view taken on line 3 3 of Fig.

I have shown a manifold construction com lf" prising an exhaust section indicated gener ally as 5, and an intake section indicated generally as 6, The exhaust section has portions 7 connecting it with the engine cylinders and the intake section has portions 8 connecting 3f" it with the engine cylinders. A fuel passageway 9 leading from a conventional carburetor (not shown) attaches to the central portion of the intake manifold as at 10.

The exhaust and intake sections of the 23" manifold are separate except at their central portions where they are cast integral as indicated generally at 11.

The exhaust gases from the internal combustion engine to which thev manifold is il@ attached normally pass through the passages 7 and passageway 12 past the valve 13 and out through the exhaustpipe 14. The valve 13 is mounted on a rod 15 extending through the exhaust manifold adjacent its connection Av with the exhaust pipe 14. One end of the rod 15 is mounted in a removable section 16 of the exhaust manifold, such section being bolted to the remainder of the manifold by means of bolts 17, so as to permit assembly fi and disassembly of the valve mechanism through the aperture covered by the section 16. e. rounded valve 18 is also mounted on the rod 15 and is so positioned as to close the side passage 19 of the exhaust manifold 50 when the valve 13 is in position to open the passage 12. A handle 20 is provided upon one end of the rod 15 and a suitable rod or other extension may be attached thereto for manually operating the valve mechanism "55 from a remote point.

7,1925.4 Serial No.` 73,872.

It will be noted that in the normal functioning of the exhaust manifold a small percentage of the exhaust gases may impinge' upon the outside of the passage 21 of the Y intake manifold but owingfto vthe vfact that the passage 19, during such normal operation, is closed, the exhaust gases will tend to quickly pass throughl the passage 12 and the exhaust pipe 14; to the muffler with a very small resultant heating `of the intake passage. Vhen it is desired to' impart a considerable heat to the intake passage asin Warming up the internal combustion engine, particularly in cold weather, the lever 20 may be operated to cause the valve 13 to close the passage 12 and the valve 18 to open the passage 19 so that none of the exhaust gases may pass through the exhaust pipe 14 from the passage 12 but all of them must pass around the intake passage 21 and out through the reduced opening 22 into th-e passage 19 and thence through the passage 23 into the exhaust pipe 14 with the consequent result that a much greater play of the Vexhaust gases upon the intake passage will be had and the intake passage with its contained fuel will be heated to a much higher degree than in normal operation.

It will be obvious that various changes may be made in the arrangement, combination and construction of the various parts of my improved device without departing from the spirit of my invention and it is my intention to vcover by my claims such changes as mayl be reasonably included within the scope thereof. f

`llhat I claim is:

1. Manifolding for internal combustion engines comprising an intake manifold having a central fuelentrance portion and diverging arms, an exhaust manifold having a central portion at least partially surrounding the central portion of the intake manifold and diverging arms separated from the intake arms, one of the arms of the exhaust manifold having integrally cast and co-extensive therewith a portion forming a smaller passage than the passage in the arm, said smaller passage and the passage in the arm having a comme-n wall, said smaller passage communicating with the central portion, and a combination valve having portions Vextended into both passages and adapted, when operated, to alternately close l one and open the other passage.

2. Manifolding for internal combustion engines comprising an intake manifold having a central fuel entrance portion and diverging arms, an exhaust manifold having a central portion at least partially surrounding the central portion of the-intake manifold and diverging arms separated from the intake arms, one of the arms of the exhaust manifold having integrally cast and co-extensive therewith a portion forming a smaller' passage than the passage in the arm, said smaller passage communicating with the central portion, a combination valve having portions extended into both passages and adapted, when operated, to alternately close one and open the other passage, and baffling in the central portion of the exhaust manifold'normally tending to direct the exhaust gases through the larger passage, but permitting the same to pass thru the smaller passage When the larger passagel is closed.

3. Manifolding for internal combustion engines comprising an intake manifold hav- .ing a central fuel entrance portion and diverging arms, an exhaust manifold having a central portion at least partially surrounding the central portion of the intake manifold and diverging arms separated from the intake arms, one of the arms of the exhaust manifold having integrally cast and coextensive therewith a portion forming a smaller passage than the passage in the arm, said smaller passage communicating With the central portion, a comhination valve having portions extended into both passages and adapted, When oper ated, to alternately close one and open the other passage, and baling in the central portion of the exhaust manifold normally directing exhaust gases away from a portion of the enclosed central portion of the intake manifold when the larger passage is open but permitting the gases to pass around all of the enclosed portion thereof and outA thru the smaller passage when the larger passage is closed.

CARL BREER. 

